For interested layman:
Angle of Attack Indicator
If I hold the pitch of my airfoil constant in a fixed wing aircraft (I'll do that by controlling the nose pitch attitude, either via visual reference to the horizon, or on the attitude indicator based on a gyro of some sort)
and then I vary my airspeed,
my AoA will change: increase as I go slower, decrease as I go faster.
Depending upon model of aircraft, when the fuselage is roughly level compared to the ground, you may have a few degrees of pitch up, relative to level to the ground on the airfoil. (There is also on some aircraft "twist" from wing root to wing tip, which would induce the wing root to stall before the wing tip at high angles of attack ... )